Truck.



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JOHN F. KING, OF KALAMAZOO, MICHIGAN.

TRUCK.

Specification of Letters Patent.

Patented March 9, 1909.

Application filed December 3, 1908. Serial No. 465,866.

T 0 all whom it may concern:

Be it known that I, JOHN F. KING, a citizen of the United States,residing at Kalamazoo, county of Kalamazoo, State of Michigan, haveinvented certain new and useful Improvements in Trucks, of which thefollowing is a specification.

This invention relates to improvements in hand trucks.

The main object of this invention is to provide an improved hand truckhaving means for blocking it while loading, which is very easilymanipulated and is also light in weight, and, at the same time, strongand rigid.

Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification.

The invention is clearly defined and pointcd out in the claims.

A. structure embodying the features of my invention is clearlyillustrated in the accompanying drawing, forming a part of thisspecification, in which:

Figure 1 is a vertical section of my improved hand truck, taken on aline corresponding to line 1-1 of Fig. 2. Fig. 2 is a detail rearelevation, looking in the direction of the arrow 2 of Fig. 1. Fig. 3 isan enlarged detail, partially in section, taken on a line correspondingto line 3-3 of Fig. 2.

In the drawings, similar reference char acters refer to similar partsthroughout the several views, and the sectional views are taken lookingin the direction of the little arrows at the ends of the sectionallines.

Referring to the drawing, the frame of my improved hand truck preferablycomprises side bars 1 and cross bars 2-2 and 3-3 arranged in pairs. Atthe lower end of the frame is the forwardly-projecting foot or rest 4for the articles to be carried. The side bars are preferably extended attheir upper ends into handles 5.

The carrying wheels 6 are mounted on the axle 7, which is arranged inbearings 8 secured on the inner sides of the side bars, the wheels beingarranged between the side bars and between the lower pair of crosspieces2, as clearly appears from the drawing.

To block the truck while loading, I pro vide a blocking dog 9, which isadapted to be thrown down into engagement with the ground or floor, asis indicated by dotted lines in Fig. 1. This blocking dog is carried bythe bracket-like hangers 10, which are arranged on the insides of thewheels, being, in the structure illustrated, secured to the cross bars2. These hangers or brackets are notched at 11 to engage the axle, sothat they serve as braces and supports therefor, the axle being thussupported on both sides of the wheel. They also serve as braces for theframe. The blocking dog 9 is mounted on the pivot rod 12, which isarranged in suitable holes provided therefor in the hangers or brackets10, a set screw, as 13, being provided for securing the rod in place.The blocking dog is held normally upward by the springs 14:, which arearranged on the pivot rod, their outer ends being secured to the dog andtheir inner ends to an adjustable collar 15. (See Fig. By turning thiscollar on the pivot rod, the tension of the spring 14 is regulated, aset screw, as 16, being provided for securing the collar in its adjustedposition. Stops 17 are provided on the hangers for limiting the upwardmovement of the blocking dog, so that it is held in position to beconveniently engaged by the foot of the user to be thrown down intoengagement with the floor. The blocking dog is provided with a pair ofshoulder-like projections 18, which engage in the under side of the axlewhen the blocking dog is in its engaging position, thereby forming adirect support for the axle, and also serving as stops for the blockingdog. The lower edge 19 of the dog is preferably serrated or toothed toinsure proper engagement.

By this construction and arrangement of the parts, I secure a hand truckwhich may be easily and effectively blocked for loading and further itis a construction which is simple and light, and, at the same time, isvery strong and rigid.

I preferably provide the structure with a pair of slats 20 of bandiron,or the like, which coact with the side bars to form the body of thetruck. The legs 21 are of the usual construction.

I have illustrated and described my improved hand truck in detail in theform preferred by me on account of the structural simplicity andstrength. I am aware, however, that it is capable of considerablevariation in structural details, without departing from my invention,but, as these variations will readily appear to those skilled in the artto which this invention relates, I have not attempted to illustrate thesame herein.

Having thus described my invention, what 1. claim as new and desire tosecure as Letters Patent is:

l. The combination with the frame, of an axle; bearings therefor; wheelsarranged on the inside of said bearings; a pair of downwardly-projectinghangers arranged between said wheels to engage said axle whereby it isbraced and supported; a blocking dog; a rod on which said blocking dogis pivotally mounted carried by said hanger; a pair of coiled springsarranged on said pivot rod, the outer ends of said springs being securedto said blocking dog; a collar to which the inner ends of said springsare secured, adjustably mounted on said rod; means for securing saidcollar in its adjusted position; and stops on said hangers for saidblocking dog.

2. The combination with the frame, of an axle; bearings therefor; wheelsarranged on the inside of said bearings; a pair of downwardly-projectinghangers arranged between said wheels to engage said axle whereby it isbraced and supported; a blocking dog; a rod on which said blocking dogis pivotally mounted carried by said hanger; a pair of coiled springsarranged on said pivot rod, the outer ends of said springs being securedto said blocking dog; a collar to which the inner endsof said springsare secured, adjustably mounted on said rod; and means for securing saidcollar in its adjusted position.

The combination with the frame, of an axle; bearings therefor; wheelsarranged on the inside of said bearings; a pair of downwardly-projecting hangers arranged between braced and supported; a blocking dog; arod on which said blocking dog is pivotally mounted carried by saidhanger; a spring arranged to hold said blocking dog normally ele ated;and stops on said hangers for said blocking dog.

4:. The combination with the frame, of an axle; bearings therefor;wheels arranged on the inside of said bearings; a pair of downwardly-proj ecting hangers arranged between said wheels to engage said axlewhereby it is braced and supported; a blocking dog; a rod on which saidblocking dog is pivotally mounted carried by said hanger; and a springarranged to hold saidblocking dog n ormally elevated.

5. The combination with the frame, of an axle; bearings therefor;wheels; a blocking dog; a rod on which said blocking dog is pivotallymounted; a pair of coiled springs arranged on said pivot rod, the outerends of said springs being secured to said blocking dog; a collar towhich the inner ends of said springs are secured, adjustably mounted onsaid rod; a set screw for securing said collar in its adjusted position;and stops on said hangers for said blocking dog.

6. The combination with the frame, of an axle; bearings therefor;wheels; a blocking dog; a rod on which said blocking dog is pivotallymounted; a pair of coiled springs arranged on said pivot rod, the outerends of said springs being secured to said blocking dog; a collar towhich the inn-er ends of said springs are secured, adjustably mounted onsaid rod; and a set screw for securing said collar in its adjustedposition.

7. The combination with the frame comprising side bars and cross pieces,of an axle; bearings therefor arranged on the under sides of said sidebars wheels arranged on the inside of said side bars and between a pairof said cross pieces; a pair of downwardlyprojec-ting bracket-likehangers arranged on said cross bars between said wheels, said hangersbeing arranged to engage said axle whereby it is braced and supported; ablocking dog pivotally mounted on said hangers; a spring arranged tohold said blocking dog normally elevated; and stops on said hangers forsaid blocking dog.

8. The combination with the frame comprising side bars and cross pieces,of an axle; bearings therefor arranged on the un der sides of said sidebars; wheels arranged on the inside of said side bars and between a pairof said cross pieces; a pair of downwardly-projecting bracket-likehangers arranged on said cross bars between said wheels, said hangersbeing arranged to en gage said axle whereby it is braced and supported;a blocking dog pivotally mounted on said hangers; and a spring arrangedto I hold said blocking dog normally elevated. said wheels to engagesald axle whereby it is 9. The combination with the frame comprisingside bars and crosspieces, of an axle; bearings therefor arranged on theun der sides of said side bars; wheels arranged on on the inside of saidside bars and between a pair of said cross pieces; a pair ofdownwardly-projecting bracket-like hangers arranged on said cross barsbetween said wheels, said hangers being arranged to engage said axlewhereby it is braced and supported; a blocking dog pivotally mounted onsaid hangers, said blocking dog being provided with members adapted toengage said axle when said dog is in its operative position; a springarranged to hold said blocking dog normally elevated; and stops on saidhangers for said blocking dog.

10. The combination with the frame comprising side bars and crosspieces, of an axle; bearings therefor arranged on the under sides ofsaid side bars; wheels arranged on the inside of said side bars andbetween a pair of said cross pieces; a pair of downwardly-projectingbracket-like hangers arranged on said cross bars between said wheels,said hangers being arranged to engage said aXle whereby it is braced andsupported; a blocking dog pivotally mounted on said hangers, saidblocking dog being provided with members adapted to engage said axlewhen said dog is in its operative position; and a spring arranged tohold said 10 blocking dog normally elevated.

In witness whereof, I have hereunto set my hand and seal in the presenceof two witnesses.

JOHN F. KING. [1 s.] Vitnesses CLARA E. BRADEN, F. GERTRUDE TALLMAN.

